Rotary steam-drier.



No. 694,366. --P'at ented Mar. 4, I902."

, F. B. GIESYLER.

ROTARY STEAM DRIER.

(Application filed Oct. 19, 1900.)

t5 Sheets- Sheet I (No Model.

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. No. 694,366. Patented Mar,- 4,1902. 6 F. B. GIESLER; I

ROTARY STEAM DRIER. 4

(Application filed. Oct. 19, 1900.)

(No Model.) 6 Sheets-Sheet 2.

No. 694,366. Patented Mar. 4, I902. F. B. GIESLER.

ROTARY STEAM DRIER.

(Application filed Oct. 19, 1900) (No Model.) 6 Sheets-Sheet 3.

No. 694,366. Patalited Mar. 4, I902.

F. B. GJESLER. ROTARY STEAM DRIER.

(Application filed Oct. 19, IQOO.) (NolodaL) s Shuts-Sheet 4.

'NO. 694,366. Patented Mar, 4, 1902.

- 1 FQB. ,GIESLEB.

RDTARY STEAM DRIER. (Application filed Oct. 19, 1990.

(No Model.) 1

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No. 694,366. Patented Mar 4, I902.

I F. B. GIESLEB.

ROTARY STEAM DRIER.

, (Application filed Oct. 19, 1900.; P (No Model.)

6 sheets-sh66i 6. i

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FRANKLIN B. GIESLER, OF MlLlVAUKEE, WVISOONSIN.

ROTARY STEAM-DRIER.

SPECIFICATION forming part of Letters Patent No. 694,366, dated March 4,1902.

Application filed October 19, 1900. Serial No. 33,551. (No model.)

To all whom it may concern:

Be it known that I, FRANKLIN B. GIESLER, a citizen of the United States,and a resident of Milwaukee, in the county of Milwaukee and State ofWVisconsin, have invented certain new and useful Improvements in RotarySteam-Driers; and I do hereby declare that the following is a full,clear, and exact description thereof.

My invention has for its objectto provide simple steam-tight rotarydriers especially designed for economical treatment of variousmaterials,particularly products of sugar-refin cries, glucose factories,and starch-factories, said invention consisting in certain peculiaritiesof construction and combination of parts hereinafter set forth withreference to the accompanying drawings and subsequently claimed.

Figure 1 of the drawings represents a side elevation of my improvedrotary steam-drier partly broken and in section; Fig. 2, a frontelevation of the feed and drive end of the drier partly broken and insection; Fig. 3, a detail side elevation of said feed and drive end ofthe drier; Fig. 4, a front elevation of the delivery end of said drier;Figs. 5 and 6, sectional views indicated by lines 5 5 and 6 6 in thefirst figure; Fig. 7, a detail plan view illustrating the drivemechanism and drum-cradles of the drier; Fig. 8, a detail sectional viewindicated by line 8 8 in the seventh figure, and Fig. 9 a similar viewindicated by line 9 9 in the eighth figure.

Referring by letter to the drawings, I show a drum comprising acylindrical boiler-iron shell A, having the front end thereof bolted tothe inner one of a pair of rings B B, joined by a continuous web b andradial web-braces 5, these rings, their connecting-web, and theweb-braces being of cast metal in one piece. Facing an inner annularflange of ring B is a radially-apertured steel plate 0, that partlycloses the adjacent end of shell A, and another steel plate D is madefast to said flange and an annular casting E, that abuts the formerplate, whereby a steam-space is provided,

between said plates. The outer portion of casting E is reduced and madefast to an annular casing F, having a flanged stay-ring o in its freeextremity.

Fast on the solid central portion of the ra dially-apertured plate 0 isa conical iron chamber G, having a stuffing-box at its outer end ofleast diameter. The stuffing-box is engaged by a steam-pipe H, having aflange d thereon in said box, and the steam-pipe also engages a bushinge in the central opening of a spider f in the larger portion of theaforesaid conical chamber. Fitting apertures provided in the casting Eand chamber G are pipes Lwhereby commu nication is established betweensaid chamber and the steam-space aforesaid.

A metal head J, suspended by arms 9 from rod h, loose in slotted hangerse', faces the flange of stay-ring c and closes the outer end of easingF, a split ring j, constituting part of said head, being engaged by thestufflng-box end of the conical chamber Gaforesaid. Made fast to head Jto register with an opening therein is an air-pipe K, and said head isprovided with a normally covered manhole through which access may be hadto the herein-described drier. A feed-spout L is also made fast to headJ to register with an opening therein, and the shaft of a spiralconveyer M has its bearings in an end of the spout and a bracket is uponthe inner side of said head, this conveyer being driven at variablespeed by the means hereinafter specified or such other means as may befound suitable for the purpose.

' The rear end of-shell A is bolted to a conical flange m of the outerone of a pair of cast-metal rings N N, the inner ring being providedwith a series of radial angle-lugsn at regular intervals apart, that arecapable of movementupontheopposingouterring. Facing the inner side ofthe ring N is a flat steel plate 0, and bolted to the outer side of saidring is an outwardly-dished steel head P, having a central openingengaged by a flange of a spacing-ring p, to which and said head isbolted the flanged larger end of a conical iron hood Q, constituting anextension of the expansion -chamber formed by the opposing plate andhead aforesaid, said hood having a stuffing-box at its outer end ofleast diameter. The dished head is provided with a normallycoveredhand-hole, through which access is had to the expansion-chamber formedby said head and the opposing plate.

Fitting the stufling-box end of conical hood Q and a bushing q in thecentral opening in a spider r in said hood is a siphon-pipe R, the innerleg of which extends down to nearly the bottom of the space betweenplate 0 and head P aforesaid, said pipe being provided with a flange sin said stuffing-box.

- Set in the ring N is an annular apron S of considerable width, and anangle-ring tis bolted to the outer portion of this apron to stiffensame.

Set in apertures of the plates 0 O are a series of charcoal iron fines Ton a circle concentric with the shell A, in which they are contained,and a corresponding series of angle-irons u are bolted to said shelllongitudinally thereof to stifien the same and impinge against theseveral fines. Another series of charcoal iron flues T on a circleconcentric with shell A, in which they are'contained, are set inapertures in the plates 0 O, and another such fiue T, axially of saidshell, is set in apertures of said plates to register with steam-pipe Haforesaid.

Owing to the movable impingement of the angle-lugs n against the ring Nthere is antomatic compensation for expansion and contraction of thesteam-fines.

Tires U of preferably semisteel are detachably connected to thecast-metal rings B N, each tire being herein shown as provided with aflange lapping one side of the adjacent ring and having angle-clampbrackets c held thereto by screws 20 tooppose the other side of saidring.

With the exception of head J, the devices in connection therewith, andthe siphon-pipe R the general construction and arrangement of parts thusfar described constitutes a rotary drum that is set at an inclination tohave its tires impinge rollers V, j ournaled in rockers W, havingt-runnions supported on baseblocks X, said rollers and rockersconstituting self-adjusting cradles for the drum.

The rear end of the drum is lowest, and a stop-wheel Y, having avertical axle set in a socket of a bar Z, made fast to the rearbaseblocks, opposes the adjacent side of the front tire to preventlongitudinal movement of said drum. Should the tires become too muchworn or otherwise unserviceable, new ones may be readily substituted atcomparatively little expense, it being expected that the drier ingeneral will outlast several pairs of tires.

Fitted tight on ring B is a spur-tooth collar 0, engaged by a pinion Don a drive-shaft E, having its hearings on a bar F, connecting the frontbase-blocks,and on another block G, this shaft being provided with afast pulley and a loose pulley, as is clearly illustrated in Fig. 7. Thebar F and block G are also provided with bearings for a counter-shaft1-1, in turn provided with a sprocket-wheel I, that has link-beltconnection with another sprocket-wheel J on the shaft of the spiralconveyer above specified.

Arranged to turn in bracketszcon the driveshaft bearings is a screw-rodK, controlled by a hand-wheel fast thereon, and engaging this rod areears y of a shoe L, a nut a being arranged on said rod between theshoe-ears. The shoe operates as a traveler fora belt M, loose on acone-pulley P, fast to the driveshaft, and thisbelt impinges a similarpulley P", fast on a counter-shaf t H, said pulleys being so disposedthat the smaller end of one is adjacent to the larger end of the other.Hence by adjustment of the belt longitudinally of the aforesaid pulleysrotary speed of the conveyer with respect to that of the drum is readily varied as occasion may require. In practice it may be founddesirable to have the bearings for the counter-shaft H adjustable, so asto regulate the space between theconepulleys for accommodation of beltsM of variable thickness.

From the foregoing it will be readily understood that the stationaryhead J automatically adjusts itself to'the inclination of the rotarydrum and lies snu g against the adjacent otherwise open end of same. Thematerial to be dried falls from the feed'spout L into casing F, fromwhere it finds its way through the radial apertures of plate 0 intoshell A to continue on and out of this shell through the from which itis finally discharged onto a floor or into a convenient receptacle. v

While in the shell A the material is exposed to heat radiating from thelines T T T, through which steam is circulated at a sufficient pressure.Water of condensation from the steam is caught in the expansion-chamberbetween plate 0 and head P and forced out through the siphon-pipe R bythe steampressure in said chamber.

By means of a suction fan or stack in connection with the pipe K'a flowof air is maintained in the drier, and the material under treatment isconstantly agitated by being caught between the angle-irons u, liftedtherewith to a certain elevation and dropped back incidental to therotary movement of the drum portion of said drier. To increase theheating-surface and drying capacity of the apparatus, it maybe desirableto utilize an additional annular series of fluesarranged to stagger thefines T, some of such additional fiues being indicated by dotted linesin Fig. 6.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is-

1. A drier comprising an inclined rotary drum embodying a cylindricalshell, an annular casting made fast to the high end of the shell, aradially-apertured flat plate abutting the casting, another casting andplate combined'with those aforesaid to form a steamspace, a conicalcentral chamber extending in front of the first of said plates andhaving pipe connection with said steam space, a steam-pipe instuffing-box and hushed-spider engagement with said chamber, an annularcasing extending in front of the latter of the aforesaid castings, astationary head constituting a closure for the casing, an air-pipe and afeed-spout in connection with the head,

a ring having a conical flange in connection with the low end of theaforesaid shell, another ring having radial lugs impinging the innerface of the former ring, a fiat plate abutting the inner side-of thelug-ring, 'an outwardly-dished head made fast to the outer side of saidlug-ring, a rear central conical nular casting made fast to the-high endof the shell, a radially-apertured fiat plate abutting the casting,another casting and plate combined with those aforesaid to form asteamspace, a conical central chamber extending in front of the first ofsaid platesand having pipe connection with said steam-space, asteam-pipe in connection with said chamber central of the same,an'annular casingextending in front of the latter of the aforesaidcastings, a stationary head constituting a closure for the casing, anair-pipe and a feedspout in connection with the head, a ring having aconical flange in connection with the low end of the aforesaid shell,another ring having radial lugs impinging the inner face'of the formerring, a fiat plate abutting the inner side of the lug-ring, anoutwardly-dished head made fast to the outer side of said lug-ring, a

rear central conical hood having its large en'd, in open connection withthe dished head, a

siphon-pipe in connection with the hood ce'n- 'tral of same, an annularapron'extending rearwardfrom the outermost of the aforesaid rings, "aseries of flues at intervals of -a circle within the shell, and aclusterof fines central of the aforesaid shell,all the flues being set at theirends in the plates that face the 31161130 ends.

In testimony that I claim the foregoing I have hereunto set my hand, atMilwaukee, in the county of Milwaukee and State of Wis cousin, in thepresence of two witnesses.

FRANKLIN B. GIESLER;

Witnesses: l

N. E. OLIPHANT, B. C. ROLOFF.

